Ice chisel



J. W. SALO ICE CHISEL July 11, 195o Filed Jan. 21, 1948 L.fo/m W. Salo INVENTOR. @132m BY @a ua/paws; me):

Patentedl `luly 1 1,4 1950 l UNITED STATES PATENT GFF l CVE l 2,514,800 i ICE CHISEL John `W. Salo, Trout Lake, Minn. v yApplication January 21, 1948, Serial No. 3,581

This invention `relates to novel and useful improvements in cutters for use particularly in fracturing ice. 1

Anmobject of this invention is to safely transn* y'port an ice chisel., Wherebythe cutting surface cutting portion of an ice chisel from the handle portion. A y

. A further object of this 'invention is to provide a simplified device of the characterto be described `having no objectionable protuberances on the 'handle portion Ato impede the utility of the device during ic'e fracturing operations.y

Ancillary objects and 'features of novelty will become apparent to those skilled in the art, in

following the'description yoi? the preferred form of the invention, illustrated in the accompanying drawing, "wherein: i l v Figure lis an elevationalv view. of fthe preferred form of the invention; y

.Figure 2 isa side vievv' 'of the invention shown in Figure 1'; 1 A

Figure 3 is a 'sectional View taken substantially on the line l3- '3 'of Figure `l and in the direction of the arrows; y

Figurei is a sectional view taken substantially on the line 44-*4 of Figure i and in the direction cfthearrowm Figure 5 is a transverse sectional view taken `substantially on 'the line 5-5 `oli YFigure 4 and `in the direction of thearrow's: Figure 6 is a sectional view of the handle show*- ing the reduced portionthereof particularlyand also illustratingy 'the cutting edge of the blade seated therein, and;

Figure 7 is 'an exploded perspective view showv ing particularly the latch` means used in associa- "on with the positioning of the elements shown inFigureL-..

This invention has been developed to provide a device for easily transportingan ice chisel both from the viewpoint of protecting vthe individual using'the ice.y chisel and also protecting the surfacesof the cutting portion of the blade;

In order to realize this purpose theblade is 'se- `of thehandle has a bore vor fslot I8 therein with a 'reducedportion 2l) forming a continuation of the said shank I6.

A metallic plate 22 is recessed inthe shank I6 and has a slot 24 formed therein.

A blade portion 26 having a housing 28 integrally associated therewith is supplied. The said housing 28 is provided with a bore, which `lbore is of substantially vthe same dimensionsvas theV external configuration of the reduced portion 20. The bore may be seated on the reduced portion 20 as is seen in Figure 3 for one selected position of operativeness. The terminal portion of the said blade 26 has a beveled edge 30 and adjacent this bevelled edge there is supplied a notch 32. Ihis notch cooperates with means positioned on the handle lior locking purposes.

, In locking the blade within the slot or bore I8, the notch 32 is engaged by an arm 34 which is pivoted in a suitable slot 36, supplied in the reduced `portion 20. `The said arm has an angular terminal portion 38 which seats in the notch 32 for locking purposes. l

Means for resiliently biasing `the pivoted arm 34 to a selected position is provided. The preferable means may be seenbest in Figure 6 wherein there is disclosed a collar 40 havinga resilient arm or spring 42 attached thereto. A suitable screw 44 may be used in attaching the arm directly to the reduced portion 2D, if found clesirable. The opposite end of the said arm or flat spring 42 is seated in a notch 46 supplied in the said arm 34. It is readily noted that the spring 42 is spacedfrom the surface of the reduced portion 20, whereby upon application of a force to Vthis plate or spring 42,V the arm 34 will be pivoted about the ,pin 48 asv an axis, thereby lifting .the angular extension 3 8 from the notch 32 for removal of the blade 28 from the bore I8.v

l In order to lock the housing 26 on the reduced portion 20, a pair of bayonet 1atch`shaped notches 5D and 52 respectively are supplied in the bore ofthe housing 28. A lug 54 is rigidly attachedtothe reduced portion 20 and a resiliently biased latch keeper 56 lis supplied there adjacent.

The said resiliently biased latch keeper 56 is `slidale adjacent the lug 54 and is resiliently biasedb'y means of the conventional coilspring 58. Thesaid 'spring seats `in arecess 6D sup? plied inthe shank i6 and has one end seated von 3 a shelf 62. This shelf is integral with the keeper 56 and a nger slide 64 extends through the slot 24. By this expedient the said latch keeper 56 may be selectively urged against the force of the spring 58 in accordance with the confines of the said slot 24.

In operation of the latching device utilized in association with the housing 28, the opposed lugs 54 on the said reduced portion 20 are urged into the reduced areas50 and 52 forming bayonet shaped latch keepers and the housing 28 and handle l are mutually rotated. This ac,-`

tion permits the keepers 5B to spring into the reduced portions 50 and 52 respectively in order y to prevent mutual rotation `blade relative to each other.

of the shank and Further, this action and resultant arrangement of parts pre-y vents relative axial movement of the blade and handle l0. If it is desirable to make the handle of a pair of vsubstantially identical'parts, the 'rivets or screws 10 may extend through suitable plates recessed in the lhandle portion for attachment purposes. This isbut a matter of choice however, and if it is found desirablethe lhandle I0 may be formed of a single' piece.

Also, the said lugs 5-4 may be attached rigidly to plates 'I2 which are recessed in the said handle |70 and fixed thereto by means of the through bolts or rivets "10. This construction is preferable since the-full Weight of the bl'adeZ is carried bythe said lugs 54 during the operation of the invention.

While there hasbeen 'described but a preferredvformr of the present invention, it is apparent that variations may be made without departing ,from thes'pirit thereof. Accordingly, limitation .issought only in accordancevvith the scope of the followingclaims. A

l Having described the invention, what is claimed asnewis': j `1. An ice chisel" comprising a housing forming a handle and having a bore, a blade,; at latch keeper 'carried by said housing, means forming an opening vadiacenti,one end offsaid. blade opferablynconnected with said latch keeper, an arm mounted for pivotal movement in. said housing and movablein" said 'bore for maintaining said blade in said bore, and saidv blade'h'aving'l an opening therein to seatlsaid arm. Y 2L'In-a devicefor'fracturing ice, av handle havingwfa shankincluding a reduced portion and having a` slotin said handle, a blade having a housing xed at one end thereof, meansfor removablymaintainng said blade on said handle including al latch keeper attached to said shank, aflug on said reduced portion adjacent said keeper, means'v in lsaid housing lockingly engag- 4ingsaid lug andkeeper, saidhousing fitting on 'saidmreduced portion; and Ameans for releasably maintaining said blade in said handle including an armpivoted to said reduced portion and a part of said'arm extending through saidslot, said blade and hayin'gla notch lockinglyengaging said pivoted arm.' 3.1m a device. for fracturing ice, a handle having a shank includingl a reduced portion and vhaving a, slot insaid handle, a blade having a housing ixedl at.`o ne 'enfd '.i'hereof, means :for removably. maintaininggsaid blade on said handle in- 'cluding alatch. keeperattached to said shank, a lug. on Vsaid reduced. portion adjacent Ysaid keeper, .means in said-housing lockingly engaging ,said lugand'keeper, saidj housing fitting on 'engaged by said keeper retaining said blade in said handle including an arm pivoted to said reduced portion and a portion of said arm extending through said slot, said blade having a notch lockingly engaging said pivoted arm, means reacting on said handle for resiliently biasing said keeper, and a at spring secured to said reduced portion for pivotally urging said arm.

4. In an ice chisel, a handle yhaving a bore, a blade having an Aaperture adjaceritthe sharp end and a housing at the opposite end, means operable with said aperture and carried by said handle for retaining the sharp end of said blade "in said bore, and means carried by said handle for releasably retaining said housing on said handle including a latch keeper, means slidably supporting said keeper on said handle, a spring reacting on said keeper and said handle normally pressing said keeper in a single direction, and means forming an opening in said housing for retaining said housing on said handle.

5. In `an ice chisel,v a handle having a bore, a blade having an aperture adjacent the sharp end and a housing at the opposite end, means operablewith said aperture and carried by said handle for retaining thesharp end of said blade in said bore.. and means carried by'said handle forV releasably retaining said housing on said handle including a latch keeper, rneansslidably supporting saidkeeper on said handle, a spring reactingon said keeper and said handle normally pressingfsaid keeperq'in asingle direction, and means forming an opening in said housing engaged by said `keeper-,for retaining said housingA on said handlesaid handle having a reduced f portion on theexterior surface thereof and said said reducedportion,l and means for releasably y housing being of such sizeso as to iit on said reduced portion, the outside surface being flush 4with the outsideisurfaceof the part of the handle immediately adjacent ther reduced portion.

`6.v An' ice chisel comprising a handle having a longitudinal bore concentric With a reduced por- -tion `on the exteriorsurfa'ce thereof, a blade hav- Ainga handle at one end yandan aperture adjacent the oppositesharp end, means for maintaining said housing on saidreduced 'portion including a slot lin said housing'a latch keeper mounted .for sliding movement on said handle and operable in said slotl the junction of said reduced portion and ythe remainder oisaid handle forming an abutment for operative engagement with said housing, andmeans carried by lsaid handle and operable in said bore for locking engagement with the aperture adjacent the sharp end of said blade to retain said blade within said; bore, said last-mentioned means including an arm mounted for pivotal movement on said handle, a flat spring carried by said-reducedportion and slidable vWithin saidv housing when said housing is disposed on said reduced portion,said'spring reacting-:oni said-arm opposing the` .operation of 'said arm'.

-f REFERENCES yCITED vThe followingreferencesjareof record inthe iile of this patent: l,

STATES PATENTS* 

